Abstract
Mn K-edge X-ray absorption spectroscopy experiments were performed on the solid- and solution-phase samples of [MnII(dpaqR)](OTf) (R=H, Me) and [MnIII(OH)(dpaqR)](OTf). The extended X-ray absorption fine structure (EXAFS) data show distinct differences between the MnII and MnIII–OH complexes, with fits providing metric parameters in excellent agreement with values from X-ray crystallography and density functional theory (DFT) computations. Evaluation of the EXAFS data for solid-phase [MnIII(OH)(dpaq)](OTf) resolved a short Mn–OH bond distance of 1.79 Å; however, the short trans-amide nitrogen bond of the supporting ligand precluded the resolution of the Mn–OH bond distance in the corresponding solution-phase sample and for both [MnIII(OH)(dpaqMe)](OTf) samples. The edge energy also increases by approximately 2 eV from the MnII to the MnIII–OH complexes. Experimental pre-edge analysis shows the MnII complexes to have pre-edge areas comparable to the MnIII–OH complexes, despite the presence of the relatively short Mn–OH distance. Time-dependent density functional theory (TD-DFT) computations illustrate that Mn 3d–4p mixing, a primary contributor to pre-edge intensities, decreases by ~ 0.3% from the MnII to MnIII–OH complexes, which accounts for the very similar pre-edge areas. Collectively, this work shows that combined EXAFS and XANES analysis has great potential for identification of reactive MnIII–OH intermediates, such as those proposed in enzyme active sites.
Graphical Abstract
Similar content being viewed by others
References
Bull C, Niederhoffer EC, Yoshida T, Fee JA (1991) J Am Chem Soc 113:4069–4076
Rulíšek L, Ryde U (2006) J Phys Chem B 110:11511–11518
Wennman A, Oliw EH, Karkehabadi S, Chen Y (2016) J Biol Chem 291:8130–8139
Wennman A, Karkehabadi S, Oliw EH (2014) Arch Biochem Biophys 555–556:9–15
Su C, Oliw EH (1998) J Biol Chem 273:13072
Su C, Sahlin M, Oliw EH (2000) J Biol Chem 275:18830–18835
Gaffney BJ, Su C, Oliw EH (2001) Appl Magn Reson 21:413–424
Pecoraro VL, Hsieh WY (2008) Inorg Chem 47:1765–1778
McEvoy JP, Brudvig GW (2006) Chem Rev 106:4455–4483
Glockner C, Kern J, Broser M, Zouni A, Yachandra V, Yano J (2013) J Biol Chem 288:22607–22620
Yano J, Yachandra V (2014) Chem Rev 114:4175–4205
Rice DB, Wijeratne GB, Burr AD, Parham JD, Day VW, Jackson TA (2016) Inorg Chem 55:8110–8120
Wijeratne GB, Corzine B, Day VW, Jackson TA (2014) Inorg Chem 53:7622–7634
Coggins MK, Brines LM, Kovacs JA (2013) Inorg Chem 52:12383–12393
Goldsmith CR, Cole AP, Stack TDP (2005) J Am Chem Soc 127:9904–9912
Yano J, Kern J, Irrgang KD, Latimer MJ, Bergmann U, Glatzel P, Pushkar Y, Biesiadka J, Loll B, Sauer K, Messinger J, Zouni A, Yachandra VK (2005) Proc Natl Acad Sci U S A 102:12047–12052
Frank P, Benfatto M, Qayyam M, Hedman B, Hodgson KO (2015) J Chem Phys 142:084310
Kau LS, Spira-Solomon DJ, Penner-Hahn JE, Hodgson KO, Solomon EI (1987) J Am Chem Soc 109:6433–6442
Westre TE, Kennepohl P, DeWitt JG, Hedman B, Hodgson KO, Solomon EI (1997) J Am Chem Soc 119:6297–6314
DeBeer George S, Petrenko T, Neese F (2008) J Phys Chem A 112:12936–12943
DeBeer George S, Brant P, Solomon EI (2005) J Am Chem Soc 127:667–674
Leto DF, Jackson TA (2014) Inorg Chem 53:6179–6194
England J, Martinho M, Farquhar ER, Frisch JR, Bominaar EL, Munck E, Que L Jr (2009) Angew Chem Int Ed Engl 48:3622–3626
Jackson TA, Rohde JU, Seo MS, Sastri CV, DeHont R, Stubna A, Ohta T, Kitagawa T, Munck E, Nam W, Que L Jr (2008) J Am Chem Soc 130:12394–12407
Rohde JU, Torelli S, Shan XP, Lim MH, Klinker EJ, Kaizer J, Chen K, Nam WW, Que L (2004) J Am Chem Soc 126:16750–16761
Krewald V, Lassalle-Kaiser B, Boron TT 3rd, Pollock CJ, Kern J, Beckwith MA, Yachandra VK, Pecoraro VL, Yano J, Neese F, DeBeer S (2013) Inorg Chem 52:12904–12914
Rees JA, Martin-Diaconescu V, Kovacs JA, DeBeer S (2015) Inorg Chem 54:6410–6422
Roemelt M, Beckwith MA, Duboc C, Collomb MN, Neese F, DeBeer S (2012) Inorg Chem 51:680–687
Ravel B, Newville M (2005) J Synchrotron Radiat 12:537–541
Rehr JJ, Mustre de Leon J, Zabinsky SI, Albers RC (1991) J Am Chem Soc 113:5135–5140
Wojdyr M (2010) J Appl Crystallogr 43:1126–1128
Neese F (2012) Wiley Interdisciplinary reviews: computational molecular science. J Comput Sci 2:73–78
Becke AD (1986) J Chem Phys 84:4524–4529
Perdew JP (1986) Phys Rev B 33:8822–8824
Schäfer A, Horn H, Ahlrichs R (1992) J Chem Phys 97:2571–2577
Schäfer A, Huber C, Ahlrichs R (1994) J Chem Phys 100:5829–5835
Neese F (2003) J Comput Chem 24:1740–1747
Sinnecker S, Rajendran A, Klamt A, Diedenhofen M, Neese F (2006) J Phys Chem A 110:2235–2245
Hirata S, Head-Gordon M (1999) Chem Phys Lett 302:375–382
Hirata S, Head-Gordon M (1999) Chem Phys Lett 314:291–299
Becke AD (1993) J Chem Phys 98:5648–5652
Lee C, Yang W, Parr RG (1988) Phys Rev B 37:785–789
Weigend F, Ahlrichs R (2005) Phys Chem Chem Phys 7:3297–3305
Lenthe EV, Baerends EJ, Snijders JG (1993) J Chem Phys 99:4597–4610
van Wüllen C (1998) J Chem Phys 109:392–399
Ciringh Y, Gordon-Wylie SW, Norman RE, Clark GR, Weintraub ST, Horwitz CP (1997) Inorg Chem 36:4968–4982
Ching WM, Zhou A, Klein J, Fan R, Knizia G, Cramer CJ, Guo Y, Que L Jr (2017) Inorg Chem 56:11129–11140
Leto DF, Ingram R, Day VW, Jackson TA (2013) Chem Commun 49:5378–5380
Colmer HE, Howcroft AW, Jackson TA (2016) Inorg Chem 55:2055–2069
Acknowledgements
This work was supported by NSF Grant 1565661. Use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, is supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. The SSRL Structural Molecular Biology Program is supported by the DOE Office of Biological and Environmental Research, and by the National Institutes of Health, National Institute of General Medical Sciences (including P41GM103393). The contents of this publication are solely the responsibility of the authors and do not necessarily represent the official views of NIGMS or NIH. Use of Beamline 2-2 at SSRL was partially supported by the National Synchrotron Light Source II, Brookhaven National Laboratory, under US Department of Energy Contract No. DE-SC0012704. XAS experiments were supported by the Case Western Reserve University Center for Synchrotron Biosciences NIH Grant, P30-EB-009998, from the National Institute of Biomedical Imaging and Bioengineering (NIBIB). We thank Dr. Erik Farquhar at NSLS for outstanding support of our XAS experiments and for helpful conversations.
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Rice, D.B., Wijeratne, G.B. & Jackson, T.A. Mn K-edge X-ray absorption studies of mononuclear Mn(III)–hydroxo complexes. J Biol Inorg Chem 22, 1281–1293 (2017). https://doi.org/10.1007/s00775-017-1501-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00775-017-1501-0